[gentoo-announce] [ GLSA 200901-15 ] Net-SNMP: Denial of Service

[news 28]

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Gentoo Linux Security Advisory GLSA 200901-15

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http://security.gentoo.org/

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Severity: Normal

Title: Net-SNMP: Denial of Service

Date: January 21, 2009

Bugs: #245306

ID: 200901-15

 

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Synopsis

========

 

A vulnerability in Net-SNMP could lead to a Denial of Service.

 

Background

==========

 

Net-SNMP is a collection of tools for generating and retrieving SNMP

data.

 

Affected packages

=================

 

-------------------------------------------------------------------

Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 net-analyzer/net-snmp < 5.4.2.1 >= 5.4.2.1

 

Description

===========

 

Oscar Mira-Sanchez reported an integer overflow in the

netsnmp_create_subtree_cache() function in agent/snmp_agent.c when

processing GETBULK requests.

 

Impact

======

 

A remote attacker could send a specially crafted request to crash the

SNMP server. NOTE: The attacker needs to know the community string to

exploit this vulnerability.

 

Workaround

==========

 

Restrict access to trusted entities only.

 

Resolution

==========

 

All Net-SNMP users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=net-analyzer/net-snmp-5.4.2.1"

 

References

==========

 

[ 1 ] CVE-2008-4309

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4309

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200901-15.xml

 

Concerns?

=========

 

Security is a primary focus of Gentoo Linux and ensuring the

confidentiality and security of our users machines is of utmost

importance to us. Any security concerns should be addressed to

security ( -at -) gentoo.org or alternatively, you may file a bug at

http://bugs.gentoo.org.

 

License

=======

 

Copyright 2009 Gentoo Foundation, Inc; referenced text

belongs to its owner(s).

 

The contents of this document are licensed under the

Creative Commons - Attribution / Share Alike license.

 

http://creativecommons.org/licenses/by-sa/2.5